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A plan and side view of a generic, empty canal lock. A lock chamber separated from the rest of the canal by an upper pair and a lower pair of mitre gates.The gates in each pair close against each other at an 18° angle to approximate an arch against the water pressure on the "upstream" side of the gates when the water level on the "downstream" side is lower.
A side pound is a particular type of extremely short lock pound, which is extended sideways to make up for the short distance between locks so as to avoid excessive level fluctuations. An example of this is the Caen Hill locks on the Kennet and Avon Canal. Climbing the hill that leads to Devizes requires 29 locks. The first seven and the last ...
A pound lock was eventually constructed between 1851 and 1852, to accommodate barges up to 108 by 20 feet (32.9 by 6.1 m). [1] Use of the river was toll-free, up to the lock at Old Ford, and the principle was maintained by a clause in the enabling Act of Parliament.
Lock (water navigation)#Pound lock To a section : This is a redirect from a topic that does not have its own page to a section of a page on the subject. For redirects to embedded anchors on a page, use {{ R to anchor }} instead .
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A drawing of a boat passing downstream through a flash lock [1] [2] A flash lock is a type of lock for river or canal transport. Early locks were designed with a single gate, known as a flash lock or staunch lock. The earliest European references to what were clearly flash locks were in Roman times. [3]
The CEO of Walgreens admits anti-theft measures like putting toothpaste, baby food formula under lock and key are backfiring on sales — customer says, ‘You could wait 10 to 20 minutes’
Schematic of quantities for capstan equation An example of holding capstans and a powered capstan used to raise sails on a tall ship. The capstan equation [ 1 ] or belt friction equation , also known as Euler–Eytelwein formula [ 2 ] (after Leonhard Euler and Johann Albert Eytelwein ), [ 3 ] relates the hold-force to the load-force if a ...